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Oxidative stress is involved in the activation of NF-κB signal pathway and immune inflammatory response in grass carp gill induced by cypermethrin and/or sulfamethoxazole

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Abstract

At present, the concentration of environmental pollutants, such as pesticides and antibiotics exposed in environment, especially in aquatic environment is increasing. Research on environmental pollutants has exploded in the last few years. However, studies on the combined effects of pesticides and antibiotics on fish are rare, especially the toxic damage to gill tissue is vague. In this paper, cypermethrin (CMN) and sulfamethoxazole (SMZ) were analyzed and found that there was a strong correlation between the pathways affected by the first 30 genes regulated by CMN and SMZ, respectively. Therefore, the toxic effects of CMN (0.651 μg L−1) and/or SMZ (0.3 μg L−1) on grass carp gill were studied in this paper. Histopathology, quantitative real-time PCR, and other methods were used to detect the tissue morphology, oxidative stress level, inflammation, and apoptosis-related indicators of the fish gills after exposure of 42 days. It was found that compared with the single exposure (CMN/SMZ) group, the combined exposure (MIX) group had a more pronounced oxidative stress index imbalance. At the same time, nuclear factor-κB (NF-κB) signal pathway was activated and immuno-inflammatory reaction appeared in MIX group. The expression of tumor necrosis factor (TNF-α) in the rising range is 2.94 times that of the C group, while the expression of interleukin 8 (IL-8) is as high as 32.67 times. This study reveals the harm of CMN and SMZ to fish, and provides a reference and basis for the rational use of pesticides and antibiotics.

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Availability of data and materials

The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.

Funding

This work was supported by the Key Projects of Natural Science Foundation of Heilongjiang Province of China (Grant ZD2020C005).

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Contributions

Baoying Li: writing — original draft, visualization; Yu Wang: methodology, conceptualization; Hongjing Zhao: data curation, investigation; Kai Yin: project administration; Yachen Liu: resources; Dongxu Wang: visualization; Hui Zong: supervision; Mingwei Xing: funding acquisition.

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Correspondence to Mingwei Xing.

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Ethics approval and consent to participate of this study was approved by the Animal Protection and Utilization Management Committee of Northeast Forestry University.

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Not applicable.

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The authors declare no competing interests.

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Responsible Editor: Bruno Nunes

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Li, B., Wang, Y., Zhao, H. et al. Oxidative stress is involved in the activation of NF-κB signal pathway and immune inflammatory response in grass carp gill induced by cypermethrin and/or sulfamethoxazole. Environ Sci Pollut Res 29, 19594–19607 (2022). https://doi.org/10.1007/s11356-021-17197-9

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  • DOI: https://doi.org/10.1007/s11356-021-17197-9

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